Question about Poisson results

Hey I ran a poisson dist. on my data and found this comparison with results from poisson and the observed proportions:
The first values are the observed proportions, which sum up to 1
The second values are the poisson generated values.

0.301886792

0.320754717

0.169811321

0.122641509

0.066037736

0.018867925
SUM:

1

0.249875508

0.320754717

0.240279452

0.111072577

0.038508653

0.010680702
SUM:

0.996942361

Now I really want to know if this disparity in my results is okay because I was trying to test if poisson distribution is right for my data. please advise me if the observed data and the poisson data disparity is within reason.

Hey I ran a poisson dist. on my data and found this comparison with results from poisson and the observed proportions:
The first values are the observed proportions, which sum up to 1
The second values are the poisson generated values.

0.301886792

0.320754717

0.169811321

0.122641509

0.066037736

0.018867925
SUM:

1

0.249875508

0.320754717

0.240279452

0.111072577

0.038508653

0.010680702
SUM:

0.996942361

Now I really want to know if this disparity in my results is okay because I was trying to test if poisson distribution is right for my data. please advise me if the observed data and the poisson data disparity is within reason.